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  • Prior Authorization Metrics Provide New Insights into Insurer Practices, but Gaps Remain

    Issue Brief

    This analysis of available 2025 prior authorization data finds insurers denied at least 1 in 8 standard requests for prior authorization across three insurance markets: Medicare Advantage, Medicaid managed care, and the federally facilitated ACA Marketplaces. Denial rates varied wide segments by insurer. The analysis highlights limitations of the data and challenges for consumers interpreting it.

  • Change in February effectuated enrollment, by state, 2025-2026

    How Has ACA Marketplace Enrollment Changed Across States in 2026?

    Issue Brief

    Following several years of rapid enrollment growth in the Affordable Care Act (ACA) Marketplaces that corresponded with temporary enhanced premium tax credits, enrollment fell for the first time in seven years in 2026, when those tax credits expired. Every state except for New Mexico saw a drop in ACA Marketplace enrollment from 2025 to 2026. State-based Marketplaces that run their own enrollment platforms, including those that partially offset the expiring federal enhanced tax credits, generally…

  • 2026 Medical Loss Ratio Rebates

    Issue Brief

    Insurers estimate they will pay $759.2 million in Medical Loss Ratio (MLR) rebates in 2026 to select individuals and employers that purchase their health coverage, according to a KFF analysis of preliminary data reported to state regulators. The estimated rebate for 2024 is less than rebates issued in most prior years.

  • In Preliminary Rate Filings, ACA Marketplace Insurers Largely Propose Double-Digit Premium Increase For 2027, Following a Steep Climb This Year 

    News Release

    ACA Marketplace insurers are proposing a median premium increase of 14% for 2027— indicating a likely second consecutive year of double-digit increases, according to a new analysis of preliminary rate filings in 16 states and DC. If these increases hold, typical premiums for insurers participating in the ACA Marketplaces would jump by more than one-third between 2025 and 2027.

  • ACA Deductible FI

    The Average Marketplace Deductible Grew by About $1,000 Per Person in 2026, With More Enrollees Shifting to Higher-Deductible Plans as Enhanced Tax Credits Expired

    News Release

    The average Affordable Care Act (ACA) Marketplace deductible experienced the steepest increase in history—growing by 37% or over $1,000, from $2,759 in 2025 to $3,786 in 2026 as enhanced premium tax credits expired, according to a new KFF analysis. After the enhanced tax credits ended, many Marketplace shoppers shifted toward lower-premium, higher-deductible plans.

  • ACA Deductible FI

    What We Know So Far About 2026 ACA Marketplace Enrollment, Premiums, and Deductibles

    Issue Brief

    This analysis examines early indicators of how the expiration of enhanced premium tax credits has affected effectuated enrollment levels (i.e., enrollment among people who have paid their premiums), plan selections, and out-of-pocket costs in 2026, drawing on plan selection and effectuated enrollment data from the Centers for Medicare & Medicaid Services (CMS) and state-based Marketplace (SBM) Open Enrollment reports, as well as KFF survey data and individual market enrollment estimates from Wakely Consulting Group.

  • Health Insurance Marketplace Calculator

    Feature

    The Health Insurance Marketplace Calculator, updated with 2025 premium data, provides estimates of health insurance premiums and subsidies for people purchasing insurance on their own in health insurance exchanges (or “Marketplaces”) created by the Affordable Care Act (ACA).